
Keywords: جذب بینی; Nasal absorption; Positron emission tomography; Pharmacokinetics; Nasopalatine; ViscosityPET, positron emission tomography; [18F]FDG, 2-deoxy-2-[18F]fluoro-d-glucose; HPC, hydroxypropylcellulose, H-grade; MRI, magnetic resonance image; VOIs, volumes of in